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High-temperature-resistant PBT (polybutylene terephthalate) material with epoxy resin adhesiveness and preparation method thereof

A technology of epoxy resin and adhesiveness, which is applied in the field of high temperature resistant PBT materials and its preparation, can solve the problems of reduced packaging efficiency, difficulty in controlling the curing process of epoxy resin viscosity changes, etc., and achieve the effect of smooth PBT surface and significant high temperature resistance , Improve the effect of mechanical properties and high temperature resistance

Inactive Publication Date: 2016-08-31
BENGBU ZHENGYUAN ELECTRONICS TECH
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  • Description
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Problems solved by technology

[0006] Chinese patent CN 104610711 B discloses a PBT material with good epoxy resin adhesion and its preparation method. The invention uses antioxidant 24-44, antioxidant 168, antioxidant 1010 and carbon free scavenger HP136 The compounding, through the synergistic effect of each component, makes the material have excellent anti-aging performance, introduces reactive functional groups that have the ability to react with epoxy resin, and improves the interfacial adhesion with epoxy resin, but when using epoxy resin Rapid viscosity changes make it difficult to control the curing process, and rapid curing results in reduced encapsulation efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weighing: 70 kg of PBT, 18 kg of cardanolamine, 18 kg of polyvinyl alcohol microspheres, 6 kg of sodium dodecyl sulfonate, 6 kg of gelatin, 3 kg of nano calcium carbonate, 3 kg of heavy calcium carbonate, carbon nano Tube kilogram, pentaerythritol stearate 2 kilograms.

[0027] Specific steps are as follows:

[0028] (1), preparation of microcapsule curing agent:

[0029] ①. Under stirring conditions, add 0.5wt% gelatin aqueous solution and 0.5wt% sodium dodecylsulfonate aqueous solution, and disperse for 40 minutes under mechanical stirring at 800 rpm to obtain an aqueous phase;

[0030] 2. In the dichloromethane solvent, add cardanolamine and polyvinyl alcohol microspheres, and disperse evenly in an ultrasonic instrument to obtain an oil phase, and gradually add the water phase prepared in step 1 into the oil phase;

[0031] ③. Stir and emulsify the mixed solution for 60 minutes, raise the reaction temperature to 32°C and stir for 4 hours, then raise the temperature...

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Abstract

The invention discloses a high-temperature-resistant PBT (polybutylene terephthalate) material with epoxy resin adhesiveness. The PBT material is composed of the following raw materials in parts by weight: 60-80 parts of PBT, 15-20 parts of cardanol amine, 15-20 parts of polyvinyl alcohol microsphere, 5-8 parts of sodium dodecylsulfate, 5-10 parts of gelatin, 2-4 parts of nano calcium carbonate, 1-3 parts of ground calcium carbonate, 6-12 parts of carbon nanotube and 1-3 parts of pentaerythritol stearate. The microcapsulates of the introduced microcapsule curing agent are broken under certain conditions, so that the curing agent is slowly released, thereby achieving the goal of controlling the curing process between the material and the epoxy resin potting adhesive, and enhancing the interface binding property between the material and the epoxy resin.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-temperature-resistant PBT material with epoxy resin adhesion and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (English name Polybutylene Terephthalate, referred to as PBT) is milky white [0003] Color Translucent to opaque, crystalline thermoplastic polyester. It has excellent electrical properties, high heat resistance, toughness, fatigue resistance, self-lubrication, low coefficient of friction, weather resistance, low water absorption, and maintains various physical properties (including electrical properties) in a humid environment. Good, so it is widely used as engineering plastics in automobiles, electronic and electrical components. [0004] The engine ignition coil is the main component of the engine ignition system. Its function is to increase the low voltage of the car battery to a high voltage of 20kv to 40k...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L89/00C08K13/06C08K9/10C08K7/24C08K5/17C08K3/26C08K5/103
CPCC08K2201/011C08K2201/014C08L67/02C08L2201/08C08L89/00C08K13/06C08K9/10C08K7/24C08K5/17C08K2003/265C08K5/103
Inventor 夏云夏建生
Owner BENGBU ZHENGYUAN ELECTRONICS TECH
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